package com.ecjia.component.imagecircle;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable; 
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;

import com.ecmoban.android.shopkeeper.sijiqing.R;

public class CircleImage extends ImageView {
	
	    public CircleImage(Context context) {  
	        super(context);  
	    }  
	  
	    public CircleImage(Context context, AttributeSet attrs) {  
	        super(context, attrs);  
	    }  
	  
	    public CircleImage(Context context, AttributeSet attrs, int defStyle) {  
	        super(context, attrs, defStyle);  
	    }  
	  
	    @Override  
	    protected void onDraw(Canvas canvas) {  
	    	Drawable drawable = getDrawable();  
	        if (drawable == null) {  
	            return;  
	        }  
	  
	        if (getWidth() == 0 || getHeight() == 0) {  
	            return;   
	        }
            Bitmap bitmap = null;
            if (drawable instanceof BitmapDrawable) {
                bitmap = ((BitmapDrawable) drawable).getBitmap();
            }else {
                bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
            }
            try {
                if(null!=bitmap){
                    bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);
                }else{
                    bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.iv_user_default);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            if (null == bitmap) {
                bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.iv_user_default);
            }
	  
	        Bitmap roundBitmap =  getCroppedBitmap(bitmap, getWidth());  
	        canvas.drawBitmap(roundBitmap, 0, 0, null);  
	    }  
	    /* 
	     * 对Bitmap裁剪，使其变成圆形，这步最关键 
	     */  
	    public static Bitmap getCroppedBitmap(Bitmap bmp, int radius) {  
	        Bitmap sbmp;  
	        if(bmp.getWidth() != radius || bmp.getHeight() != radius)  
	            sbmp = Bitmap.createScaledBitmap(bmp, radius, radius, false);  
	        else  
	            sbmp = bmp;  
	  
	        Bitmap output = Bitmap.createBitmap(sbmp.getWidth(), sbmp.getHeight(), Bitmap.Config.ARGB_8888);  
	        final Rect rect = new Rect(0, 0, sbmp.getWidth(), sbmp.getHeight());  
	  
	        Paint paint = new Paint();  
	        paint.setAntiAlias(true);  
	        paint.setFilterBitmap(true);  
	        paint.setDither(true);        
	        paint.setColor(Color.parseColor("#BAB399"));  
	  
	        Canvas c = new Canvas(output);          
	        c.drawARGB(0, 0, 0, 0);  
	        c.drawCircle(sbmp.getWidth() / 2+0.7f, sbmp.getHeight() / 2+0.7f, sbmp.getWidth() / 2+0.1f, paint);  
	        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));  
	        c.drawBitmap(sbmp, rect, rect, paint);  
	  
	        return output;  
	    }  
	      
	}  


